M.a. Ford. 20618000 Carbide Screw Machine Drill Bit 0.18in

Product Description

The M.A. FORD. 20618000 is a solid carbide screw machine length drill bit designed for high-precision drilling in demanding shop and field applications. Built to Series 206 specifications, this short-length bit features a 0.18-inch diameter, a 118-degree faceted point angle, and a web-thinned, parallel-web construction that reduces thrust and improves chip evacuation at entry. The right-hand spiral flute geometry and bright/uncoated finish make it well suited for dry or lightly lubricated cutting where coating buildup is a concern. Machinists, tool-and-die workers, and maintenance technicians reach for this style when rigidity and hole-location accuracy matter more than extended reach.

This bit is rated for use in cast iron, non-ferrous metals, stainless steel, and carbon steel. The screw machine length profile — overall length of 2-3/16 inches with a 3/4-inch flute length — keeps deflection minimal in short-hole work, CNC machining centers, turret lathes, and bench drill presses. The straight-cylindrical shank measures 0.18 inches in diameter and 1-7/16 inches in length, fitting standard drill chucks without an adapter. It is packaged and sold individually.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive workpiece materials
• 118-degree faceted point with web thinning to reduce entry thrust and improve centering
• Regular spiral, 2-flute design sized at a 3xD flute-to-diameter ratio for efficient chip removal
• Bright/uncoated finish — no coating layer to interfere with tight-tolerance hole sizing
• Diameter tolerance held to +0.0000 to -0.0005 inches for consistent fit in close-tolerance applications
• Short screw machine length minimizes deflection in high-RPM or interrupted-cut conditions

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for applications requiring a 0.18-inch diameter (wire size No. 15) screw machine length carbide bit in the M.A. FORD. Series 206 range, sized for workpiece materials including cast iron, non-ferrous metal, stainless steel, and steel.

Installation Notes

This bit is installed by machinists and tool-and-die technicians in standard drill chucks accepting straight-cylindrical shanks. Ensure the machine spindle and chuck are fully stopped and locked out before changing tooling. Verify chuck runout is within acceptable limits before seating a carbide bit, as carbide is brittle and susceptible to fracture from lateral shock or excessive runout. Follow applicable shop safety procedures and machine manufacturer guidelines for spindle speed and feed rate selection.